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Abstract

Bits of Unicode

Mark Davis - IBM Centre for Java Technology SV

Intended Audience: Manager, Software Engineer
Session Level: Advanced

Supporting Unicode in small-memory environments presents some interesting challenges, which are only increased with the extension to surrogate characters. No matter which encoding is used to represent Unicode, 1,114,111 different codepoints are a lot to handle. This paper discussed tricks and strategems for associating information with Unicode characters that allows implemenations to minimize the impact on memory. The discussion includes: squeezing out bits for Unicode properties, effective use of trie structures, inversion lists, compact character mapping tables, and others.

Code that supplies and uses these structures is part of ICU, the Java/C/C++ open-source Unicode enablement libraries from IBM, and can be used to apply to other domains. must be understood in order to properly make use of its capabilities.


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UnicodeIUC18
Unicode Standard Conference Board Past Conferences Call for Papers Sponsors Showcase
Registration Accommodation Travel Program Talks and Papers Next Conference
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12 December 2000, Webmaster